The Grundfos DDA 7.5-16 (product number 93065155, type key DDA 7.5-16 AR-C-PVC/V/C-F-31U7) is a digital dosing pump with a maximum capacity of 1.981 US gal/hour at up to 145.04 psi, with an exceptional 1:3000 turndown ratio for precise chemical metering.
Dosing Performance
| Maximum capacity | 1.981 US gal/hour |
| Minimum capacity | 2.5 ml/h |
| Maximum pressure | 145.04 psi |
| Turndown ratio | 1:3000 |
| Dosing accuracy | 1 % |
| Control variant | AR-C |
| Maximum suction lift (operation) | 19.7 ft |
| Maximum suction lift (priming) | 6.56 ft |
| Max viscosity (at 25 mPas class) | 2500 mPas |
Materials (Wetted Parts)
| Dosing head | PVC (Polyvinyl chloride) |
| Gaskets | FKM |
| Valve balls | Ceramic |
| Valve type | Standard |
Electrical & Control
| Supply voltage | 100-240 V |
| Frequency | 50 / 60 Hz |
| Maximum power (P1) | 24 W |
| Enclosure class | IP65 / TYPE 4X |
| Analog input | 0/4-20 mA |
| Analog output | 0/4-20 mA |
| Pulse input | Yes |
| External stop input | Yes |
| Level indication input | Yes |
| Bus communication | Yes |
| Output relays | 2 |
| Cable length | 4.92 ft |
| Plug | USA, Canada |
Connections, Limits & Identification
| Suction connection | 0.17x 1/4, 1/4x3/8, 3/8x1/2" |
| Discharge connection | 0.17x 1/4, 1/4x3/8, 3/8x1/2" |
| Liquid temperature range | 32 °F to 113 °F |
| Ambient temperature range | 32 °F to 113 °F |
| Sound pressure level | 60 dB(A) |
| Approvals | CE,CSA-US,NSF61,RCM |
| Grundfos product number | 93065155 |
| EAN | 5715467280326 |
| Net weight | 4.41 lb |
| Gross (shipping) weight | 8.8 lb |
Typical Applications
Chemical dosing for water treatment • antiscalant and biocide dosing for reverse osmosis • chlorination and pH adjustment • coagulant and flocculant dosing • industrial process chemical metering • cooling tower and boiler chemical treatment.
Need help? Contact ForeverPure Place for pricing, lead time, accessories, or help selecting the correct model for your application.
Accessories for This Pump
Commonly specified alongside Grundfos E-pumps. Send us your pump nameplate and we will confirm the correct part for your exact build and voltage before you order.
- RPI Inlet Pressure Sensor
Inlet pressure protection with low-suction shutdown. 
VFS Flow & Temperature Sensor
Flow and temperature feedback to the pump’s onboard controller.- RPS Pressure Sensor
Discharge pressure feedback for constant-pressure booster control.
Building-automation connectivity
This pump accepts a Grundfos CIM interface card (or an external CIU box) to report to a BMS or PLC. All eight are the same card with a different protocol — choose the one your building system speaks:
CIM/CIU 100 GENIbus · CIM/CIU 150 PROFIBUS DP · CIM/CIU 200 Modbus RTU · CIM/CIU 250 Modbus TCP · CIM/CIU 300 BACnet MS/TP · CIM/CIU 500 EtherNet/IP · CIM/CIU GRM · CIM/CIU LonWorks
